Everything a bake EMITS is now keyed by the artifact's TARGET platform rather than the
driving tclsh's personality: the bin/runtime/<tier> store a runtime is read from, .exe
suffixing of runtime files and kit outputs, presence checks, and whether the pre-deploy
process sweep uses tasklist/taskkill or ps/kill. Host semantics - copy commands, path
handling, filesystem case rules, prompts - stay keyed to the host.
The default target is the host's platform canon EXCEPT for a cygwin-family host (an
msys2/cygwin-runtime tclsh, which reports tcl_platform(platform) unix on windows), which
targets win32-x86_64. Such a host now drives the identical kit set, names and store
addressing as a native tclsh; before, it reported every kit runtime=missing against a
nonexistent mingw64-x86_64 store.
mapvfs.config entries take an optional 4th element naming the kit's target platform, so a
runtime kept in another platform's tier is a first-class mapping entry. The linux tclkit
entry now declares linux-x86_64 and bakes to a suffixless bin/punkshell902.
Zip-type kits assemble without zipfs in the driving tcl: when tcl::zipfs::mkimg is absent
(any 8.6) the image is built by raw-runtime split + punk::zip::mkzip + concatenation - the
same helper the zipcat type uses. Both mount identically (archive-start-relative offsets).
Fixes exposed by the above: the runtime capability probe looked for a suffixless filename
and so reported find-fail for every runtime on windows; with real capabilities arriving,
the extraction try-list was found to test capability presence rather than value, which
would send a plain zipfs runtime down the kit path where a failed sdx mksplit replaces
raw_runtime with the un-split original; BUILDCOPY names now follow the runtime's own
filename; runtime map keys strip only .exe (file rootname would eat the last dotted
segment of tclsh9.0.5); and native windows command lines run through a guard suppressing
msys2's posix-path argument rewriting - without it taskkill /PID <n> reached taskkill as
taskkill C:/<msysroot>/PID <n>, so the sweep could find a running kit but never replace it.
punk::platform folds the msys2 family (mingw64/mingw32/ucrt64/clang*) onto one stable
'msys' tag and CYGWIN_NT onto 'cygwin' - msys2's uname renders that token from MSYSTEM,
so one binary otherwise canonizes differently per launching shell. New normalize_os;
cygwin-x86_64 added to the platform table; 'help platforms' documents the fold.
make.tcl check reports the derivation on one line; bakelist rows carry target=<platform>
for non-default targets and the detail block names the tier; workflow text gains key note
[K9]. New characterization suite maketclplatform.test (5 tests, two self-gating on
discovering and probing a real msys/cygwin tclsh). Full suite 1112 tests: 1093 passed,
18 skipped, 1 failed = the documented exec-14.3 baseline.
Verified: msys2 tclsh8.6 bakelist output identical to native Tcl 9; a changed punk91
baked and deployed from that host with the sweep killing a running instance msys ps
cannot see; a real cross-target linux kit baked from windows to a 24MB ELF; a zipfs-less
8.6 bake producing a bootable zip kit.
Assisted-by: harness=claude; primary-model=claude-opus-5[1m]; api-location=anthropic.com
